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Natural gas flow meter calibration device and method

A flowmeter calibration, natural gas technology, applied in the direction of testing/calibration devices, measuring devices, liquid/fluid solid measurement, etc., can solve the problems of limited pressure regulation range, unable to meet the user's pressure and flow requirements, etc., to improve the calibration range Effect

Active Publication Date: 2022-02-01
PETROCHINA CO LTD
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Problems solved by technology

[0005] The embodiment of the present invention provides a natural gas flowmeter calibration device and method, which can solve the problem that the detection pressure and flow range of the commonly used in-line calibration system are greatly affected by the upstream gas source and the natural gas transported by the downstream trunk line, and the pressure regulation range is affected by limit, unable to meet the pressure and flow requirements required by users

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  • Natural gas flow meter calibration device and method
  • Natural gas flow meter calibration device and method
  • Natural gas flow meter calibration device and method

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Embodiment Construction

[0085] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0086] figure 1 It is a schematic structural diagram of a natural gas flowmeter calibration device provided by an embodiment of the present invention. The natural gas flowmeter calibration device includes: a first in-line calibration module 1, a second in-line calibration module 2 and a loop calibration module 3; The straight-line calibration module 1 includes: a first pressurizing unit 11, a first sonic nozzle unit 12 and a primary standard unit 13 arranged in sequence along the gas flow direction, the first pressurizing unit 11 is used to make the first straight-line The gas pressure in the row calibration module 1 is within the range of 0.3MPa-9.0MPa; the primary standard unit 13 is used to determine the composite relative standard ...

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Abstract

The invention discloses a natural gas flowmeter calibration device and method, belonging to the technical field of flowmeter calibration. In the embodiment of the present invention, based on the first in-line calibration module, the primary standard unit is used to calibrate the first sonic nozzle unit; based on the second in-line calibration module, the first transfer turbine unit is calibrated using the second sonic nozzle unit; Based on the loop calibration module, the unit under test is calibrated using the second transfer turbine unit. The first in-line calibration module, the second in-line calibration module, and the loop calibration module are respectively equipped with pressurizing devices, and by adjusting each pressurizing device, the pressure of the gas in the calibration device can be adjusted to the user's desired The pressure greatly increases the calibration range of the calibration device.

Description

technical field [0001] The invention relates to the technical field of flowmeter calibration, in particular to a natural gas flowmeter calibration device and method. Background technique [0002] According to national calibration regulations, all natural gas flow meters for custody transfer need to be sent to a natural gas flow meter calibration agency for calibration. [0003] At present, the natural gas flowmeter calibration system commonly used by calibration institutions is an in-line calibration system, which includes: tracing the flow value of the flowmeter to be tested to the transfer turbine unit, tracing the flow value of the transfer turbine unit to the sonic nozzle unit and The flow values ​​of the sonic nozzle unit are traceable to three in-line calibration blocks of the primary standard unit. [0004] The detection pressure and flow range of the above-mentioned in-line calibration system are greatly affected by the upstream gas source and the natural gas transp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01F1/32G01F25/00
CPCG01F1/325G01F25/13G01F25/15
Inventor 彭利果任佳樊兰蓓周承美孔波万元周闵伟陈琦黄敏陈晓科李万俊
Owner PETROCHINA CO LTD
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